11123132231 has 2 divisors, whose sum is σ = 11123132232. Its totient is φ = 11123132230.

The previous prime is 11123132213. The next prime is 11123132243. The reversal of 11123132231 is 13223132111.

It is a happy number.

Together with previous prime (11123132213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11123132231 - 2¹⁴ = 11123115847 is a prime.

It is a super-2 number, since 2×11123132231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123132201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561566115 + 5561566116.

It is an arithmetic number, because the mean of its divisors is an integer number (5561566116).

Almost surely, 2^11123132231 is an apocalyptic number.

11123132231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123132231 is an equidigital number, since it uses as much as digits as its factorization.

11123132231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 20.

Adding to 11123132231 its reverse (13223132111), we get a palindrome (24346264342).

The spelling of 11123132231 in words is "eleven billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred thirty-one".